Popsugar Fitness Workouts 30-Minute Cardio and Strength-Training Workouts 12 Fat-Burning 30-Minute Workouts to Tone Your Whole Body December 21, 2018 by Christina Stiehl View On One Page Photo 4 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Simple 30-Minute Treadmill HIIT Workout No need to get fancy with inclines and speed with this 30-minute HIIT treadmill workout. Use sprints to your advantage to break a sweat and torch calories. Previous Next Start Slideshow WorkoutsStrength TrainingCardio WorkoutsTreadmill Workouts30-Minute WorkoutsFull-Body Workouts